KR20140103412A - Roll printing apparatus capable of the consecutive processing and roll printing method using the same - Google Patents

Abstract

The present invention relates to a roll printing apparatus capable of a continuous process and a roll printing method using the same. According to the present invention, a printing material is coated by one or more coating parts in an alternative manner, or the printing material is sequentially coated by two coating heads attached on the coating part. Moreover, a coating nozzle, used for a coating process, is continuously washed so that time loss caused by washing the coating nozzle can be prevented. Thereby, the roll printing apparatus can perform the continuous process.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll printing apparatus capable of performing a continuous process and a roll printing method using the roll printing apparatus.

The present invention relates to a roll printing apparatus capable of a continuous process and a roll printing method using the roll printing apparatus. More particularly, the present invention relates to a roll printing apparatus and a printing method using the same, The present invention also relates to a roll printing apparatus and a roll printing method using the same, which can prevent a time loss due to cleaning of a coating nozzle by continuously cleaning a coating nozzle used in coating.

The roll printing apparatus and the roll printing method using the same according to the present invention can be applied to roll-to-roll off-set printing of a metal mesh for a touch panel.

In general, fine patterns used in semiconductor circuit devices and display devices such as LCDs and PDPs are formed by photolithography using a photoresist and are generally manufactured through coating, exposure, development, cleaning, and curing.

However, although photolithography has the advantage of precisely obtaining a desired pattern, it is necessary to perform a lot of steps, to use various materials to maximize the effect of the photoresist, and to use a large amount The photoresist of the photoresist is consumed.

In recent years, a technique of obtaining a fine pattern by a roll printing method has been proposed and researched to overcome the shortcomings of such photolithography.

The roll printing apparatus and method for pattern formation can be applied in various ways and can be applied not only to a color and BM (Black Matrix) pattern of R (Red), G (Green), and B Film Transistor), PDP (Plasma Display Panel), and pattern transfer of barrier rib material.

These general roll printing apparatuses generally comprise a cotter, a printing roll, a printing roll driving apparatus, a cliche or a substrate stage and a driving device for the stage line as the most basic components, and additionally, they are absorbed in the cleat and / A drying device for drying the blanket by absorbing the solvent, and various sensor devices may be additionally provided.

In such off-set printing, when at least one clamp is required due to the manufacturing characteristics of the printing roll (or blanket roll) and when the diameter of the printing roll becomes large, the jumping of the coating portion (or DIE COATER) Is required.

On the other hand, when a printed matter is applied to a printing roll using a die coater, the application of the printed matter must be uniformly performed to improve the precision and print quality of the printed pattern formed through the printing process.

However, application of the print through the die coater is intermittently performed for a predetermined period of time (as described above), and if the volatility of the solvent in the print is high, some of the material is also laminated around the coating nozzle portion during coating, There is a problem that the quality can be deteriorated. For example, prints remaining around the coating nozzles in the course of applying the prints cause non-uniform application of the prints in the process of applying the prints to the next roll, resulting in poor print pattern accuracy and print quality. Furthermore, when the printed matter has a low viscosity (for example, 10 cps or less), liquid dropping occurs.

Therefore, in order to prevent foreign substances from adhering to the periphery of the coated nozzle portion, a cleaning operation of the nozzle portion is required. In particular, it is important to research and develop an apparatus or a method capable of preventing a time loss from being caused by the cleaning operation of such a coating nozzle and continuously improving the productivity by applying a printed matter to a printing roll.

(Patent Document 1) Korean Patent Publication No. 2010-0059240 (Patent Document 2) Korean Published Patent Application No. 2007-0113524

Accordingly, the present invention provides an apparatus and method for roll-to-roll printing of metal mesh for a touch panel, comprising: (1) alternately coating printing rolls using one or more coatings; or (2) (3) and the coating nozzles used in coating are continuously cleaned, it is possible to prevent time loss due to cleaning of the coating nozzle from occurring, thereby enabling a continuous process And to propose a device and method.

In order to solve the above-mentioned problems, the present invention provides a printing apparatus comprising: a print film dispenser and a print film collecting unit capable of continuously providing a print film; A print film supporting unit for supporting the print film between the supplying unit and the supplying unit; A printing roll for transferring a printed pattern onto the print film on the support; At least one coating portion for applying a print to the printing roll; A cleaning roll for cleaning the coating nozzles of the at least one coating portion; And driving means for moving the at least one coating portion between the printing roll and the upper side of the cleaning roll, wherein the at least one coating portion is moved by the driving means and alternately applies the printing material to the printing roll, Thereby providing a printing apparatus.

It is also preferable that the cleaning roll cleans the coating nozzles of the other coating portion while one coating portion applies the print to the printing roll.

In addition, it is preferable that the driving means move the interchanging positions of the coating portions when the coating portion reaches the clamping portion of the printing roll while performing the coating process.

In addition, it is preferable that each of the at least one coating portion includes two coating heads. In particular, the two coating heads successively apply the printing material to the printing roll, and the driving means applies the coating process It is preferable that the coating portion is positioned on the upper side of the cleaning roll.

Here, the cleaning roll preferably includes a first cleaning roll and a second cleaning roll provided corresponding to the two coating heads, respectively.

The cleaning roll may clean the coating nozzle in such a manner that when the coating nozzle comes into contact with the cleaning roll, the cleaning roll rotates to remove foreign matter attached to the coating nozzle.

In addition, it is preferable that the diameter of the cleaning roll is changed according to the number of coating nozzles that can be cleaned at a time.

Further, it is preferable that the cleaning roll is made of a material having elasticity and absorbency.

In order to solve the above problems, the present invention provides a roll printing method capable of continuous processing using the roll printing apparatus described above.

According to the present invention, by alternately coating the printing rolls using one or more coating portions and continuously cleaning the coating nozzles used in coating, it is possible to prevent time loss due to cleaning of the coating nozzle, thereby improving productivity .

In addition, according to the present invention, by sequentially coating the printing rolls using a DUAL coating unit having two coating heads and continuously cleaning the coating nozzles used in coating, time loss Can be prevented from being generated, thereby enabling a continuous process.

With the above-described effects, it is possible not only to improve the print quality as a whole and improve the printing accuracy, but also to be able to carry out the continuous process, thereby improving the overall productivity.

Furthermore, the roll printing apparatus and the roll printing method using the roll printing apparatus according to the present invention can be effectively applied to a roll-to-roll offset printing method of a metal mesh for a touch panel.

1 is a schematic view of a roll printing apparatus 100 according to an embodiment of the present invention.
2 is a view schematically showing a roll printing apparatus 100 according to another embodiment of the present invention.

Hereinafter, preferred embodiments of a roll printing apparatus and a roll printing method using the roll printing apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines and the size of the constituent elements shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, the definitions of these terms should be described based on the contents throughout this specification.

1 is a schematic view of a roll printing apparatus 100 according to an embodiment of the present invention.

1, a roll printing apparatus 100 according to an exemplary embodiment of the present invention includes a print film supplying unit 10, a print film collecting unit 20, a print film supporting unit 30, 40, one or more coating portions 50a, 50b, a cleaning roll 60, and a driving means 70.

The roll printing apparatus 100 according to an embodiment of the present invention includes a feeder 10 for controlling the driving and positioning of the print film supplying unit 20 and the print film supplying unit 10 so as to enable intermittent continuous printing, feeder) and various control units; And a position control unit (for example, an EPC) for adjusting the winding position of the printed film collecting unit 20, but the present invention can be applied to a specific description Is omitted.

The printed film supplying unit 10 and the printed film collecting unit 20 serve to continuously provide the printed film F so that the printed film proceeds in one direction.

At this time, the printed film supplying unit 10 is an unwinder, and the printed film collecting unit 20 may be a rewinder, but it may be a component that can continuously supply the printed film F The configuration is not particularly limited.

Here, the printed film F is provided continuously or intermittently by driving the print film supplying unit 10 and the print film collecting unit 20, and if the printed pattern to be printed can be effectively transferred, It is noted that the material and thickness thereof are not particularly limited.

However, in the roll printing apparatus 100 according to an embodiment of the present invention, a metal mesh for a touch panel is preferably used as the printed film F.

The print film supporting unit 30 serves to support the print film F between the print film supplying unit 10 and the print film collecting unit 20.

The printed film supporting portion 30 is preferably in the form of a roll.

Particularly, the print film supporting unit 30 serves as a support part of the print film F for transferring the print pattern to the print film F, which will be described later.

In this case, it is preferable that the driving speed of the roller, which is the print film supporting portion 30, is synchronized with the driving speed of the printing roll 40 that transfers the printed pattern. That is, it is preferable that the linear velocity driven by the print film supporting unit 30 coincides with the linear velocity driven by the printing roll 40. Due to such a configuration, a more precise pattern can be transferred.

Note that the driving of the printed film supplying unit 10 and the printed film collecting unit 20 described above is not stopped even during transfer of the printed pattern on the printed film F. [

The printing roll 40 (or the blanket roll) serves to transfer the printed pattern to the printed film F on the printed film supporting portion 30. [ At this time, the printing roll 40 is coated with a printed material by coating portions 50a and 50b described later, and after some printed matter is removed by a cliche (not shown) provided on a stage for cliche mounting (not shown) And the remaining printed pattern is transferred onto the print film F positioned on the print film supporting portion 30. [

Although not shown, the printing roll 40 is provided at a position where the printing material is applied to the printing roll 40 by the coating portions 50a and 50b to be described later, a point where the printing material 40 is formed on the printing roll 40 by the cliche, And the point at which the printed matter pattern is transferred to the printed film (F).

The one or more coating portions 50a and 50b serve to apply (or coat) the print to the printing roll 40. [

For this purpose, the coating portions 50a and 50b may be a DIE COATER that applies a slurry, a printing composition, and a coating liquid such as a coating liquid to a relatively large area relatively thinly.

Here, the coating portions 50a and 50b may include coating heads 51a and 51b each accommodating a printed matter therein, and coating nozzles 52a and 52b positioned under the coating head in the form of a nozzle, This configuration makes it possible to uniformly apply the print to the printing roll 40. [

The base frames 72a and 72b are attached to the upper portions of the coating heads 51a and 51b and can be moved in various manners and directions by the driving means 70. The coating portions 50a and 50b ) Will be described together with the driving means 70. [0064]

The cleaning roll 60 serves to clean the coating nozzles 52a and 52b.

This cleaning roll 60 serves to clean the coating nozzles of the other coating portion while one coating portion applies the print to the printing roll 40. [

In particular, when one of the coating portions reaches the clamping portions 41a and 41b of the printing roll 40 while performing the coating process, it is jumped. In this case, the driving means 70, which will be described later, The coating nozzle is moved to the upper side of the cleaning roll 60 to clean the coating nozzle and the other coating part is moved to the upper side of the printing roll 40 to perform the coating process alternately.

At this time, it is preferable that the cleaning roll 60 is provided at a lower portion corresponding to the movement position of the coating portions 50a and 50b.

On the other hand, when the coating nozzles 52a and 52b contact the cleaning roll 60, the cleaning roll 60 rotates the cleaning roll 60 to remove foreign substances adhered to the coating nozzles 52a and 52b, The nozzles 52a and 52b are cleaned.

For this, the cleaning roll 60 is preferably made of a material having elasticity, but it is not limited thereto, but it is preferable that the cleaning roll 60 is formed of a material that can easily absorb deformation and easily absorb residual prints on the periphery of the coating nozzle.

It should also be noted that such a cleaning roll 60 may be set to vary in diameter depending on the number of coating nozzles that can be cleaned at one time. It should be noted that, for example, one coating nozzle may be cleaned by one cleaning roll 60, and two coating nozzles may be cleaned by one cleaning roll 60 twice the diameter.

The driving means 70 serves to move the coating portions 50a and 50b on the upper side between the printing roll 40 and the cleaning roll 60. [

To this end, the drive means 70 may include components such as a base frame 72a, 72b which is coupled to the lower side of the guide rail 71 and the guide rail 71 and can move along the guide rail 71 have.

The coating portion 50a connected to the lower side of the base frame 72a and the coating portion 50b connected to the lower side of the base frame 72b are disposed on the upper side between the printing roll 40 and the cleaning roll 60 So that they can move freely with each other.

In particular, the driving means 70 is set to replace the positions of one coating portion and another coating portion when one coating portion reaches the clamping portions 41a and 41b of the printing roll 40 while performing the coating process .

On the other hand, the driving means 70 is not necessarily limited to the above-described components, and can be reciprocated and rotated using various components (for example, a server motor, a linear motor, a rack and pinion, Can be performed.

The following is a description of the application of the printed material by such a constitution and the principle of continuous cleaning of the coating nozzle. For convenience of description, the coating portions 50a and 50b will be referred to as a first coating portion 50a and a second coating portion 50b, respectively.

The second coating portion 50b is located on the upper side of the cleaning roll 60 while the first coating portion 50a is located on the upper side of the printing roll 40 and the printing material is applied to the printing roll 40, The coating nozzle 52b is cleaned by the cleaning blade 60. [

When the first coating portion 50a is required to be jumped by the clamp portions 41a and 41b on the printing roll 40, the first coating portion 50a is moved by the driving means 70 to the cleaning roll 60, And the second coating part 50b moves to the upper side of the printing roll 10. [

The first coating portion 50a is moved to the coating nozzle 52a by the cleaning roll 60 while the second coating portion 50b is located on the upper side of the printing roll 40 and the printing material is applied to the printing roll 40. [ Is cleaned.

According to the present invention, not only the printing roll 40 is alternately coated using the first coating portion 50a and the second coating portion 50b, but also the coating nozzles 52a, 52b are continuously cleaned, time loss due to cleaning of the coating nozzle can be prevented, and productivity can be further improved.

2 is a view schematically showing a roll printing apparatus 100 according to another embodiment of the present invention.

The roll printing apparatus 100 'shown in FIG. 2 includes two coating heads 50a and 50b, respectively, as compared with the roll printing apparatus 100 shown in FIG. 1, and two And a cleaning roll, so that the description of the same components will be omitted below, and only the different components will be described in detail.

The coating portion 50a of the roll printing apparatus 100 'according to another embodiment of the present invention includes two coating heads 51a and 51a' and the other coating portion 50b includes two coating heads 51b , 51b '.

In addition, the roll printing apparatus 100 'may further include a first cleaning roll 60a and a second cleaning roll 60b to correspond to the respective coating heads.

These two coating heads 51a and 51a '(51b and 51b') serve to apply the printing material to the printing roll 40 as described above, and also to the first cleaning roll 60a and the second cleaning roll 60b (60b) serves to clean the coating nozzles of the two coating heads (51a, 51a ') (51b, 51b').

According to the configuration of the roll printing apparatus 100 'shown in FIG. 2, the two coating heads 51a and 51a' sequentially apply the print to the printing roll 40, The driving means 70 moves the coating portion 50a to the upper side of the cleaning rolls 60a and 60b. The first cleaning roll 60a and the second cleaning roll 60b clean the two coating heads 51a and 51a 'located at the upper side, respectively. This process is repeated.

The following is a description of the application of the printed material by such a constitution and the principle of continuous cleaning of the coating nozzle. For convenience of description, the coating portions 50a and 50b will be referred to as a first coating portion 50a and a second coating portion 50b, respectively.

The other coating head 51a 'is waiting while one of the coating heads 51a of the first coating portion 50a is located on the upper side of the printing roll 40 and applies the print to the printing roll 40, When the coating process is completed, the printing material is applied to the printing roll 40 using another coating head 51a '. At this time, the second coating portion 50b is positioned above the cleaning rolls 60a and 60b, and the coating nozzles 52b and 52b 'are cleaned by the cleaning rolls 60a and 60b.

When the two coating processes are completed, the first coating portion 50a is moved to the upper portion of the cleaning rolls 60a and 60b by the driving means 70 and the second coating portion 50b is moved to the upper portion of the cleaning rolls 60a and 60b. As shown in FIG.

The coating of the coating heads 51a and 51b of the first coating portion 50a is carried out while the second coating portion 50b is located above the printing roll 40 and sequentially applying the printing material to the printing roll 40. [ The nozzles are cleaned by the first and second cleaning rolls 60a and 60b, respectively.

According to the present invention, according to the present invention, the printing rolls are sequentially coated using a DUAL-type coating unit having two coating heads, and the coating nozzles used in coating are continuously cleaned, It is possible to prevent the occurrence of a time loss due to the contact between the electrodes.

As described above, according to the roll printing apparatus capable of the continuous process according to the present invention and the roll printing method using the same, the printing rolls are alternately coated using one or more coating portions, or two coating heads are attached to the coating portion, (1) preventing the liquid drop phenomenon, (2) preventing time loss due to cleaning of the coating nozzle, and (3) The present invention can provide a roll printing apparatus and a roll printing method using the roll printing apparatus capable of improving printing quality and improving printing accuracy and (4) improving productivity.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the present invention can be changed.

10: Printed film supply
20: Printed film recovery unit
30: Printed film support
40: printing roll
41a and 41b:
50a and 50b:
51a, 51a ', 51b, 51b': The coating head
52a, 52a ', 52b, 52b': coating nozzle
60: cleaning roll
60a: first cleaning roll, 60b: second cleaning roll
70: driving means
71: Guide rail
72a, 72b: base frame

Claims (10)

A print film supply unit and a print film recovery unit capable of continuously providing a print film; A print film supporting unit for supporting the print film between the supplying unit and the supplying unit;
A printing roll for transferring a printed pattern onto the print film on the support;
At least one coating portion for applying a print to the printing roll;
A cleaning roll for cleaning the coating nozzles of the at least one coating portion; And
And driving means for moving the at least one coating portion between the printing roll and the upper side of the cleaning roll,
Characterized in that the at least one coating portion is moved by the driving means and alternately applies the print to the printing roll.
Roll printing device.
The method according to claim 1,
Characterized in that the cleaning roll cleans the coating nozzles of the other coating part while one coating part applies the print to the printing roll.
Roll printing device.
3. The method according to claim 1 or 2,
The driving means includes:
Wherein when the coating portion reaches the clamping portion of the printing roll while performing the coating process, the coating portion is moved to exchange the mutual position of the coating portion.
Roll printing device.
3. The method according to claim 1 or 2,
Wherein the at least one coating portion comprises two coating heads each.
5. The method of claim 4,
Wherein the two coating heads successively apply the print to the printing roll,
Characterized in that the driving means positions the coating portion on the upper side of the cleaning roll after the application process of the two coating heads is completed.
Roll printing device.
5. The method of claim 4,
Characterized in that the cleaning roll comprises a first cleaning roll and a second cleaning roll provided to correspond respectively to the two coating heads.
Roll printing device.
3. The method according to claim 1 or 2,
The cleaning roll
And cleaning the coating nozzle in such a manner that when the coating nozzle contacts the cleaning roll, the cleaning roll rotates to remove foreign matter adhering to the coating nozzle.
Roll printing device.
3. The method according to claim 1 or 2,
Characterized in that the cleaning roll has a diameter that varies according to the number of coating nozzles that can be cleaned at one time.
Roll printing device.
3. The method according to claim 1 or 2,
Characterized in that the cleaning roll is made of a material having elasticity and absorbency.
Roll printing device.
A roll printing method using the roll printing apparatus according to claim 1 or 2.

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